Projector Service Manual
Table Of Contents
- DECLARATION OF CONFORMITY
- BZSAFE.PDF
- CH1INTRO.PDF
- CH2SYSDE.PDF
- Functional Descriptions
- Contents
- Cover and Base
- External Power Requirements
- Electronics Systems Overview
- System Power
- Card Cage
- Circuit Boards
- Raster Timing Generator Board (RTG) p/n 100568
- Sync Generator
- Sync Detector and Selector
- Serration and Equalization Lockout
- Phase Locked Loop
- VSYNC Detector, Field Separator, and Mux
- Adjustment Counters
- Serial Communication
- Raster Timing Generator I/O
- Interlocks and Protection
- Horizontal Deflection Board P/N 102523 (HDB)
- Vertical Oscillator
- Horizontal Phase Locked Loop
- Horizontal Centering
- Horizontal Power Supply
- Flyback Switching
- Geometric Correction
- Output Section
- Horizontal Sweep Failure Detection
- Serial Communication
- Horizontal Deflection Board I/O
- Interlocks and Protection
- Vertical Deflection Board P/N 102521(VDB)
- Vertical Preamps
- Vertical Amplifiers
- Sweep Failure Detection
- Side Pincushion and Keystone Correction
- Horizontal Linearity Correction
- Top and Bottom Pincushion and Keystone Correction
- Correction Amplifiers
- Serial Communication
- General I/O
- Interlocks and Shutdowns
- Video Processor Board P/N 104672 (VPB)
- Decoder
- Video/Sync Mux
- V & H Sync Strip
- SG Sync Strip
- B, G, and R Brightness and Contrast Amplifiers
- On-Screen Switch
- Gamma Correction
- Switch Logic and Video Enable
- RGB Sensitivity and Threshold Amplifier
- ILA® Bias
- Dynamic Focus Amplifier
- Serial Communication
- General I/O
- Interlocks and Protection
- Video Amplifier Board P/N 103567 or 103774 (VAB)
- Video Signal
- Failure Detection
- Beam Current Sense
- DC Restore
- Arc Protection
- Blanking
- Enable Circuit
- Focus
- Filament Supply
- General I/O
- System Controller Board P/N 104668 (SCB)
- General Functional Description
- CPU
- Working and Compressed Memory
- Expanded Memory
- Correction Address Generator
- DACs
- DSP
- Overlay Memory
- Overlay Address Generator
- Overlay Interface
- LED Display Buffers and Logic
- RS232 Interface
- IR Interface
- IIC Interface
- Serial Interface
- General I/O
- Backplane Board p/n 100571
- Optical Section
- Image Light Amplifier
- Functional Descriptions
- CH3ADJST.PDF
- CH4MAINT.PDF
- Maintenance Remove/Replace)
- Contents
- Introduction
- Projector Covers
- Ventilation Filters
- Arc Lamp Assembly
- System Power Supply
- Electronics Module
- Cathode Ray Tube (CRT)
- Video Amplifier Board (VAB)
- CRT Yoke
- High Voltage Power Supply (HVPS)
- Card Cage (Printed Circuit Boards)
- Image Light Amplifier Assembly
- Projection Lens
- (SCB) Socket Battery Replacement
- Recommended Spares
- Maintenance Remove/Replace)
- CH5TRBSH.PDF
- HGLOSS.PDF
Chapter 5---Troubleshooting
Model 330, 340SC, and 370SC Service Manual 5-8
Table 5-5
Troubleshooting Guide
Problem and
Symptom to
Check
Possible Solution Service
Manual
Operator
Manual
No Power
Main input power. Reset circuit breaker. 3-1
System Power
Supply main
circuit breaker.
Reset System Power Supply circuit
breaker. Reset interlock switch
to the U
P
position.
3.1,
Figure 3-1
System Power
Supply circuit
breaker fails
when reset?
Verify input power is correct.
Replace defective System Power
Supply
4.5
Power Interlock
Switch.
Test switch operation.
If defective, replace switch.
Figure 3-1
Projector cover not
enabling
interlock switch.
Reposition rear cover. 4.2
System Power
Supply shuts
down during
power up
sequence.
Re-seat circuit boards. 4.11
No Picture
Correct channel
selected.
Select correct channel input. 4.2
Arc Lamp turned
off.
Restart projector. 3.1 4.1
System power
turned off.
Restart projector. 3.1
Video source. Verify video source is turned on,
properly connected.
"HIDE" command
invoked.
Un-hide video using
H
IDE
/M
ODE
.
Table 5-1
Color Cutoff. Turn on R,G, B. Press R, G, B and
CUTOFF.
No video or raster
on only one
CRT.
Replace defective CRT or Video
Amplifier Board.
4.8, 4.9
Raster present but
no video image.
Replace Video Amplifier Board or
Video Processor Board.
4.11